Swapping ECU's?

[rob323]

Dezod, a couple of quick ones for you if you can spare the time please.
Can you have full control over the variable cam timing?
Can you convert it to run on speed density or map sensed?
Assuming I run some nice large duration cams with bugger all vacuum at idle, is it capable of accommodating that?

By the way, these questions are all related to using it on an Echo, whether that makes things easier or harder, I don't know.

[Dezod]

Originally Posted by rob323

Dezod, a couple of quick ones for you if you can spare the time please.
Can you have full control over the variable cam timing?
Can you convert it to run on speed density or map sensed?
Assuming I run some nice large duration cams with bugger all vacuum at idle, is it capable of accommodating that?

By the way, these questions are all related to using it on an Echo, whether that makes things easier or harder, I don't know.

No control over VVT. To be honest, we offered it in the AEM EMS we did for the Scion tC. Most people did not take the cumbersome efforts of tuning it, so it was left by the way side. The ARP lets the stock control it, which works just fine as it does a good job (not the best) in controlling it.

WHY WOULD YOU WANT TO RUN SPEED DENSITY!?!?! You are out of your mind if you want to do this! Use the MAF as the APR was designed to do. The MAF is MUCH more accurate and provides baro change correct, temp and humidity correction all in one. With MAP (Speed density) you must do that on your own. Stick with the MAF, use it's accuracy and be done with it. (also, don't worry about maxing it out, if you do you can run a GM 650g/s^2 MAF with the APR or even twin MAFs!) Take the 3D modeling of air and enjoy.

As far as cams, we've done 264s on the 2AZ tC without issues at all. We are now about to do some 280/272s to see what's up. I would not be concerned with cams and this unit at all. We've even run 850cc injectors too. No problems there either.

[rob323]

Originally Posted by Dezod

No control over VVT. To be honest, we offered it in the AEM EMS we did for the Scion tC. Most people did not take the cumbersome efforts of tuning it, so it was left by the way side. The ARP lets the stock control it, which works just fine as it does a good job (not the best) in controlling it.

Understandable, but I guess most people wouldn't have access to a free engine dyno .

WHY WOULD YOU WANT TO RUN SPEED DENSITY!?!?! .......Use the MAF as the APR was designed to do. The MAF is MUCH more accurate and provides baro change correct, temp and humidity correction all in one. With MAP (Speed density) you must do that on your own. Stick with the MAF, use it's accuracy and be done with it. (also, don't worry about maxing it out, if you do you can run a GM 650g/s^2 MAF with the APR or even twin MAFs!) Take the 3D modeling of air and enjoy.

A hang over from my Mitsubishi days I guess (ECMlink), but the reason for my question was because down the track I see itb's in my future. To run the maf, I'll need to build a plenum for them (which is probably what will happen anyway). It's good to know that I'm not stuck with the stock maf at least.

You are out of your mind if you want to do this!

I'm not going to debate that, afterall I did build an Echo rally car.

As far as cams, we've done 264s on the 2AZ tC without issues at all. We are now about to do some 280/272s to see what's up. I would not be concerned with cams and this unit at all. We've even run 850cc injectors too. No problems there either.

Please let me know how the 280's go. Does the lack of airflow across the maf at idle cause any problems or can that be compensated for?

Thanks for the replies Dezod.

Cheers,
Rob.